LWIP RT-Thread Nano

RT-Thread nano + LwIP移植线程运行、tcp建立问题

发布于 2021-08-24 14:53:34 浏览：568

手头上有一块GD32F307C_EVAL开发板，想着在移植了RT-Thread nano的基础上移植LwIP，根据RTT官方的完整版修改了`sys_arch.c / sys_arch.h`，
并根据GD官方提供的FreeRTOS例程修改了`ethernetif.c / ethernetif.h`，
结果无法ping通，且串口打印信息：`hard fault on thread: main`，然后板子就死机了。
根据串口打印信息：`hard fault on thread: main`，修改主线程栈大小为#define RT_MAIN_THREAD_STACK_SIZE     4086，只有当所有线程处于同一个优先级，所有的线程才能运行，否则只有最高的线程在运行（我加了时间片20，把高优先级线程改成50也没用，这就很奇怪了），此时能够ping通，但是把GD官方例程的tcp server例程加进去，没办法建立TCP连接。
![409eb0676d027a4b544a2b15e84b334c.png.webp](https://oss-club.rt-thread.org/uploads/20210825/409eb0676d027a4b544a2b15e84b334c.png.webp)
![tcp无法建立连接.png](https://oss-club.rt-thread.org/uploads/20210825/a1b7b9656988120a901e4574bc7b82c8.png.webp)
[hello_gigadevice.c](https://oss-club.rt-thread.org/uploads/20210825/37341ffed974b763574a5c412a7729c7.c)
[main.c](https://oss-club.rt-thread.org/uploads/20210825/23a7d2c14b2568a1a36d3dbc2dddb434.c)
[ethernetif.c](https://oss-club.rt-thread.org/uploads/20210825/5bae747be91aeec7dd5236eae070e192.c)
[ethernetif.h](https://oss-club.rt-thread.org/uploads/20210825/67204dd9ce238c9da78d9693c23a0ccc.h)
[sys_arch.c](https://oss-club.rt-thread.org/uploads/20210825/2f9dadbe01d9a08e5120fc19c4727090.c)
[sys_arch.h](https://oss-club.rt-thread.org/uploads/20210825/d1d07557a492fa0c28c5993f978bc5b8.h)

4 个回答

小小李sunny 2021-08-24

This guy hasn't written anything yet

fan_00

fan_00 2021-08-24

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小小李sunny

小小李sunny 2021-08-25

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fan_00

fan_00 2021-08-25

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fan_00 2021-08-24

This guy hasn't written anything yet

fan_00

fan_00 2021-08-25

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BruceTan 2021-08-26

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cxhxy12345 2021-08-24

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fan_00

fan_00 2021-08-25

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cxhxy12345

cxhxy12345 2021-08-26

This guy hasn't written anything yet

cxhxy12345

cxhxy12345 2021-08-26

This guy hasn't written anything yet

ping 只是ICMP协议没有问题，通常用这个来检测LWIP的物理传输层，链路层没有问题，LWIP的pbuf回调处理没有问题。
你的绑定和监听要放到循环外面，可以参考下面代码
void tcpserver(int argc, char **argv)
{
    int sock_listen, sock_connect, port;
    struct hostent *host;
    struct sockaddr_in listen_addr;
    struct sockaddr_in connect_addr;
    const char *url;

url = "192.168.1.14";   //localhost ip
    port = 8000;
    host = (struct hostent *) gethostbyname(url);

/*SOCK_STREAM => TCP*/
    if ((sock_listen = socket(AF_INET, SOCK_STREAM, 0)) == -1)
    {
        rt_kprintf("Socket error\n");
        return;
    }

listen_addr.sin_family = AF_INET;
    listen_addr.sin_port = htons(port);
    listen_addr.sin_addr = *((struct in_addr *) host->h_addr);
    rt_memset(&(listen_addr.sin_zero), 0, sizeof(listen_addr.sin_zero));

if (bind(sock_listen, (struct sockaddr * )&listen_addr, sizeof(struct sockaddr)) < 0)
    {
        rt_kprintf("Bind fail!\n");
        goto __exit;
    }
    listen(sock_listen, 10);
    while (1)
    {
        int sin_size = sizeof(struct sockaddr_in);
        sock_connect = accept(sock_listen, (struct sockaddr* )&connect_addr, &sin_size);

send(sock_connect, send_data, strlen(send_data), 0);

rt_thread_delay(50);

char str[100];
        memset(str, 0, sizeof(str));

recv(sock_connect, str, sizeof(str), 0);
        rt_kprintf("%s:%d=>%s\n", inet_ntoa(connect_addr.sin_addr), ntohs(connect_addr.sin_port), str);

closesocket(sock_connect);
    }
    __exit:
    closesocket(sock_listen);
}

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